package exceptionexer;
//try...catch
public class TryCatchDemo {
    public static void main(String[] args) {
        System.out.println("程序开始了……");
        try{
            String line = null;
            System.out.println(line.length());
        }catch (NullPointerException e){
            System.out.println("出现了空指针异常并解决了");
        }
        System.out.println("程序结束了……");











//        System.out.println("程序开始了……");
//        try{
//            String line = null;
//            System.out.println(line.length());
//        }catch (NullPointerException e){
//            System.out.println("出现了空指针异常并解决了");
//        }
//        System.out.println("程序结束了……");

    }
}
